diff --git a/app/models/student_response_rate.rb b/app/models/student_response_rate.rb
index 307952e6..c353d1f6 100644
--- a/app/models/student_response_rate.rb
+++ b/app/models/student_response_rate.rb
@@ -6,7 +6,7 @@ class StudentResponseRate < ResponseRate
   private
 
   def survey_item_count
-    @student_survey_item_count = SurveyItem.student_survey_items_for_measures(@subcategory.measures).count
+    @student_survey_item_count ||= SurveyItem.student_survey_items_for_measures(@subcategory.measures).count
   end
 
   def response_count